Time-indicating device



June 9 1926. 1,587,413

J. POND v TIME INDIQATING DEVICE Filed Dc. 5, 1924 WITNESSES INVENTO, Aff.

ATTORNEYS Patented lune l, 192163.

Uhlipifi insana 'TEN (.)FFICE.

TIME-INDICATING- DEVICE.

Application led December 3, 19,24. Serial No. 753,693.

This invention relates to time determining devices and has particular reference to a device by means of the relative position of which with respect to the sun, time may be readily and accurately determined.

The invention comprehends a device including the usual clock dial or face with which the ordinary hour and minute hands are associated and cooperate to indicate time, in conjunction with actuating means connected therewith and manually operable in accordance with the position of the sun with respect to said device whereby to move the hands to a position for determining the correct time.

lt is therefore an object of the present invention to provide a device or instrument for determining time by the usual clock face or dial and hands by means of an actuating device operable in accordance with the position of the sun.

The invention furthermore contemplates a portable device of the character described in which means is provided for properly positioning the same prior to the setting of the actuating means in accordance with the position of the sun. The invention furthermore comprehends a device of the character set forth which is comparatively simple in its construction, in expensive to manufacture and produce and which is highly efficient in its purpose.

Viith the above recited and other objects in View, the invention resides in the novel construction set forth in the following specification, particularly pointed .out in the appended claims and illustrated 1n the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein, to the full extent indicated 'by the general meaning of the terms in which the claims are expressed.

Figure 1 illustrates a plan view of a portable device constructed in accordance with the invention.

Fig. 2 is a longitudinal sectional view therethrough taken approximately on the line indicated at 2-2 in Fig. 1.

Fig. 3 is amodilied formof the'qpointer.

Fig. 4l is a plan view illustrating a stationary device or instrument.

Referring to the drawings by characters of reference 10 designates a casing which is provided with a closed lower end 11, a horizontal partition 12 and a crystal or transparent upper wall 13.' The upper face of the horizontal partition wall 12 is provided with an annular series of characters 14 defining an ordinary cloclr dial. The partition is provided with a bearing opening 15 concentric to the annular series of characters 111A through which a tubular arbor or shaft 16 extends and with which the usual hour hand 17 is connected, the said arbor or shaft 16 being connected at its lower end beneath the partition 12 with a pinion or gear 18. Extending through the tubular arbor or shaft 16 concentrically is a second shaft or arbor 19 which protrudes upwardly beyond the shaft or arbor 16 and has connected therewith the usual minute hand 20. The lower end of the shaft or arbor 19 is mounted in a step bearing 21 in the upper face of the bottom wall 11 of the casing. The shaft or arbor 19 has secured thereto immediately below the gear or pinion 18 a pinion or gear 22. A counter-shaft 23 is mounted vertically in bearings 24 in the bottom wall 11 and partition 12 alongside of and parallel to the shaft or arbor 19 and said counter-Shaft 23 has secured thereLa on super-imposed gears or pinions 25 and 26 the former meshing with the gear or pinion 18 and the latter with the gear or pinion 22 whereby the shaft or arbor 19 is driven from the shaft or arbor 16 so that the former together with the minute hand 20 makes twelve complete rotations for every rotation of the arbor 16 and hour hand 17. At one side of the dial face, the partition 12 is provided with a vertical bearing opening 27 through which a shaft 28 extends having its lower end mounted in a step bearing 29 in the upper face of the bottom wall 11 of the casing. On the said shaft immediately below the partition 12 a gear or pinion 30 is secured disposed in the same plane with the gear or pinion 18 and meshing therewith, the said gear 3Q being geared with yiSPC/t. 10Q the pm'On 11859 with respect to the sim and e connection between said pointer blade and the doek hands for simultaneously moving the same with 'the pointer to denote the time in aceoidance with the position of the sun With iespeet to Suid device, said connection Comprising a train of gears by means of which the hour hand is rotated two revolutions 'for every single revolution of the pointer and by means of which the minute hand is rotated twelve revolutions for every single revolution of the hour hand.

JOHN POND. 

